Mathematics: Please help asap! These two have been a struggle for me...

Please help asap! These two have been a struggle for

sakotaco3455

24.04.2021

Step-by-step explanation:

recall the following rule:

$n^x=y\\log_ny=x$

to solve the first one we have

$40(10^x)=15\\10^x=\frac{15}{40}\\x=log(\frac{15}{40})$

This is equal to

$\frac{log\frac{15}{40}}{log10}$ or A

same deal for the second one

$10^x=\frac{25}{50}\\x=log{\frac{25}{50}=\frac{log(\frac{25}{50})}{log10}$ or C

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Devinrichardson889

07.12.2022

132

Step-by-step explanation:

gnh=3 knl×2=100 mnl=1

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